Learn which DNS record type maps a domain name to an IPv6 address for the CCNA 200-301 exam. Understand the purpose of AAAA records and how they enable IPv6 connectivity for domains.
Table of Contents
Question
What type of DNS record maps a domain name to an IPv6 address?
A. A Record
B. MX Record
C. AAAA Record
D. PTR Record
E. CNAME Record
Answer
C. AAAA Record
Explanation
AAAA records (quad-A) map domain names to IPv6 addresses, while A records map to IPv4 addresses.
An AAAA record (pronounced “quad A”) is the DNS record type that maps a domain name to an IPv6 address. It stores a 128-bit IPv6 address, allowing devices and services to resolve domain names directly to their corresponding IPv6 addresses. This is analogous to the A record, which maps domain names to IPv4 addresses, but AAAA records are specifically designed for IPv6. The format of an AAAA record includes the domain name, record type (AAAA), and the IPv6 address. As IPv6 adoption increases, AAAA records are essential for enabling IPv6-based connectivity and communication on the Internet.
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